I am setting up an installed a Command CNC Linux system in my existing Mach 3 DHT II system. I run plsma only. Sheetcam is downloaded onto the CandCNC computer I purchased and is set up for Linux. Most sheetcam tools the same as I have used in my older Sheetcam Mach 3 system but when I went to run a simple oval cut through this new Linux Sheetcam process I got post Processor failed. "Define a diameter". Iam not drilling or running a router. How do I get rid of this post processor diameter issue?